The Thief of Time

On vacation, the Wallace family spends a couple of nights at an Irish castle which has been converted into a hotel. While exploring the castle and the grounds, their son - Eric, discovers a secret passage and a stairwell leading to nowhere. When he decides to explore again that night, he sees a portal open at the bottom of the stairs. He decides to enter this portal, and he is then transported into a different timeline where the castle exists within a small town, and a mad power-driven scientist that controls time. Eric searches for answers to return home and realizes he will forever be stuck unless he stops the Thief of Time.